Punch forming device for steel pipe

Abstract

The utility model provides a punch forming device for a steel pipe, and relates to the technical field of punch forming, the punch forming device for the steel pipe comprises a mounting table, a lower die, an arc-shaped groove, a support frame and a hydraulic device, the output end of the hydraulic device is provided with a fixing plate, the lower end of the fixing plate is provided with an extrusion block, and the lower surface of the extrusion block is arc-shaped; the hydraulic device is slidably connected with the supporting frame, a plurality of fixing cavities are formed in the supporting frame at intervals, air cylinders are arranged in the fixing cavities, the output ends of the air cylinders are fixedly connected with the hydraulic device, and a roller conveyor is arranged on the supporting frame. According to the device, a steel pipe subjected to punch forming is transferred to the roller conveyor, and the roller conveyor enables the steel pipe placed on the roller conveyor to move, so that the steel pipe is transferred out from the extrusion block, the steel pipe transferring convenience and transferring efficiency are improved, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping forming, in particular to a stamping forming device for steel pipes. Background Art

[0002] When the length of the steel pipe is relatively long, a rolling machine cannot be used to bend the steel plate. At this time, a stamping device is required. The stamping device has a punch with an arc surface and also has an arc-shaped base. The steel plate is placed on the base, and the steel plate is punched five times. Each time of punching requires changing the position of the steel plate. Finally, the steel plate is bent into a tubular shape, and then the pipe seam is welded by a welding device to complete the production of the welded steel pipe. However, after the existing steel pipe stamping device completes the stamping and forming of the steel pipe, the friction between the steel pipe and the base is relatively large, and it is inconvenient to directly transfer the steel pipe from the mold, which affects the processing efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a stamping forming device for steel pipes, aiming to solve the problems mentioned in the above background art.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: The stamping forming device for steel pipes includes an installation table, a lower die is arranged on the installation table, an arc-shaped groove is arranged on the upper surface of the lower die, a support frame is arranged on one side of the installation table, a hydraulic device is arranged at the upper end of the support frame, a fixed plate is arranged at the output end of the hydraulic device, an extrusion block is arranged at the lower end of the fixed plate, the lower surface of the extrusion block is set to be arc-shaped, the hydraulic device is slidably connected with the support frame, a plurality of fixed cavities are arranged at intervals on the support frame, a cylinder is arranged inside the fixed cavity, and the output end of the cylinder is fixedly connected with the hydraulic device. A roller conveyor is arranged on the support frame. When the steel plate for making the steel pipe is placed on the roller conveyor, the lower surface of the steel plate is located above the upper surface in the lower die.

[0005] Preferably, arc-shaped protrusions are symmetrically arranged on both sides of the fixed plate.

[0006] Preferably, two limiting grooves are symmetrically arranged on the roller conveyor, a bottom frame is slidably connected inside the two limiting grooves, an installation frame is arranged at one end of the bottom frame, rollers are symmetrically arranged at the bottom of the installation frame, and a support cylinder is arranged at the upper end of the installation frame.

[0007] Preferably, forming grooves are arranged on the remaining surfaces of the lower die.

[0008] Preferably, lifting rings are respectively arranged at the central positions of both ends of the lower die, and the lifting rings are rotatably connected with the lower die.

[0009] The beneficial effects of the utility model are:

[0010] The device transfers the steel pipe formed by stamping to the roller conveyor, and the roller conveyor moves the steel pipe placed on it, so as to transfer the steel pipe from the extrusion block, improving the convenience and efficiency of steel pipe transfer and the processing efficiency. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of a specific embodiment of the present utility model.

[0012] Figure 2 It is a schematic structural diagram when the steel pipe of the specific embodiment of the present utility model is transferred.

[0013] Figure 3 It is a schematic structural diagram of another angle of the specific embodiment of the present utility model.

[0014] Figure 4 It is a side view of the specific embodiment of the present utility model.

[0015] Figure 5 It is a stamping sequence diagram of stamping a steel plate into a steel pipe.

[0016] In the figure: 1, mounting table; 2, steel pipe; 3, lower die; 4, support frame; 5, hydraulic device; 6, fixing plate; 7, extrusion block; 8, fixing cavity; 9, cylinder; 10, roller conveyor; 11, arc-shaped protrusion; 12, limit groove; 13, bottom frame; 14, mounting frame; 15, roller; 16, support cylinder; 17, lifting ring. Detailed Embodiment

[0017] The following further describes the detailed embodiment of the present utility model with reference to the drawings.

[0018] As Figures 1-5 shown, a stamping and forming device for steel pipes includes a mounting table 1, a lower die 3 is arranged on the mounting table 1, an arc-shaped groove is arranged on the upper surface of the lower die 3, a support frame 4 is arranged on one side of the mounting table 1, a hydraulic device 5 is arranged at the upper end of the support frame 4, a fixing plate 6 is arranged at the output end of the hydraulic device 5, an extrusion block 7 is arranged at the lower end of the fixing plate 6, the lower surface of the extrusion block 7 is arc-shaped, the hydraulic device 5 is slidably connected with the support frame 4, a plurality of fixing cavities 8 are arranged at intervals on the support frame 4, a cylinder 9 is arranged inside the fixing cavity 8, the output end of the cylinder 9 is fixedly connected with the hydraulic device 5, a roller conveyor 10 is arranged on the support frame 4, when the steel plate for making the steel pipe 2 is placed on the roller conveyor 10, the lower surface of the steel plate is located above the upper surface in the lower die 3.

[0019] The hydraulic device 5 has multiple output ends. The output ends of the hydraulic device 5 are bolted to the fixed plate 6. When processing the steel plate, first place the steel plate on the lower die 3, and stamp the steel plate through the extrusion block 7. When stamping the steel plate, five stampings are required, successively stamping the first-sequence stamping area, the second-sequence stamping area, the third-sequence stamping area, the fourth-sequence stamping area, and the fifth-sequence stamping area of the steel plate. When the steel plate is placed on the lower die 3, the distance between the first-sequence stamping area on the steel plate and the roller conveyor 10 is closer than the distance between the fourth-sequence stamping area and the roller conveyor 10.

[0020] After completing the stamping of the steel plate, it is necessary to transfer the steel pipe 2 on the lower die 3. Specifically, the hydraulic device 5 is controlled to retract its output end, driving the fixed plate 6 and the extrusion block 7 to move upward. When the extrusion block 7 moves upward, since the extrusion block 7 abuts against the inner side of the steel pipe 2, it will drive the steel pipe 2 to rise synchronously, making the steel pipe 2 away from the lower die 3. When the steel pipe 2 is away from the lower die 3, the output end of the hydraulic device 5 stops retracting, and then the cylinder 9 is controlled to start. The output end of the cylinder 9 drives the hydraulic device 5 to move along the support frame 4 and moves the hydraulic device 5 above the roller conveyor 10. After the hydraulic device 5 moves above the roller conveyor 10, the cylinder 9 stops working, and then the hydraulic device 5 is started to control its output end to extend until the steel pipe 2 is placed on the roller conveyor 10, and the output end of the hydraulic device 5 continues to extend a certain distance to prevent the steel pipe 2 from hanging on the extrusion block 7. Then the roller conveyor 10 is started, and the roller conveyor 10 transports the steel pipe 2 away from the extrusion block 7. During the process of transferring the steel pipe 2, the staff can assist in controlling the position of the steel pipe 2, and at the same time, prepare to receive the transported steel pipe 2 from one side of the roller conveyor 10 by a forklift or an electric hoist.

[0021] The length of the roller conveyor 10 is longer than the length of the extrusion block 7, so as to facilitate the complete separation of the steel pipe 2 from the extrusion block 7.

[0022] Furthermore, arc-shaped protrusions 11 are symmetrically arranged on both sides of the fixed plate 6. After the extrusion block 7 completes the stamping of the fifth-sequence stamping area of the steel plate, at this time, the arc-shaped protrusions 11 on the fixed plate 6 are located inside the steel pipe 2. When transferring the steel pipe 2 from the lower die 3 to the roller conveyor 10, the width of the opening seam on the steel pipe 2 will increase under the action of the arc-shaped protrusions 11. When the steel pipe 2 is placed on the roller conveyor 10, by controlling the downward movement of the extrusion block 7, the arc-shaped protrusions 11 are all inserted into the steel pipe 2, so that the internal cross-section of the steel pipe 2 can be relatively increased, leaving more space for the extrusion block 7. When the staff controls the steel pipe 2, it is easier to separate the inner wall of the steel pipe 2 from the fixed plate 6 and the extrusion block 7, avoiding friction between the steel pipe 2 and the fixed plate 6 and the extrusion block 7, and facilitating the roller conveyor 10 to transport the steel pipe 2.

[0023] Furthermore, two limiting grooves 12 are symmetrically arranged on the roller conveyor 10. A bottom frame 13 is slidably connected inside the two limiting grooves 12. One end of the bottom frame 13 is provided with a mounting bracket 14. The bottom of the mounting bracket 14 is symmetrically provided with rollers 15. The upper end of the mounting bracket 14 is provided with a support cylinder 16. During the process of transferring the steel pipe 2 out through the roller conveyor 10, the front end of the steel pipe 2 can be continuously supported by the support cylinder 16 until most of the steel pipe 2 is outside the roller conveyor 10. At this time, the steel pipe 2 can be transferred out by a forklift or a hoist, reducing the operation difficulty of transferring the steel pipe 2.

[0024] Furthermore, forming grooves are arranged on the remaining surfaces of the lower die 3. The forming grooves can still be arc-shaped grooves, but the specifications will vary, that is, steel pipes 2 with different pipe diameters can be produced. At the same time, the forming grooves can also be V-shaped grooves or other types of grooves, enabling the lower die 3 to process multiple products simultaneously and improving the utilization rate of the lower die 3. When processing different products, it is necessary to replace the matching extrusion block 7 according to the needs.

[0025] Furthermore, lifting rings 17 are respectively arranged at the central positions of both ends of the lower die 3. The lifting rings 17 are rotatably connected to the lower die 3. When it is necessary to utilize the remaining forming grooves on the lower die 3, a hook can be set at the output end of the hydraulic device 5, and then the hook is hooked to the lifting ring 17. Then, the hydraulic device 5 drives the lower die 3 to move upward. When the lower die 3 moves upward to a certain height, the lower die 3 is rotated to set the required forming groove upward. Then, the lower die 3 is placed back on the installation table 1 through the hydraulic device 5. During the process of placing the lower die 3 downward, it is necessary to control the lower die 3 to descend slowly to facilitate the accurate placement of the lower die 3.

[0026] This device transfers the steel pipe 2 formed by stamping onto the roller conveyor 10. The roller conveyor 10 moves the steel pipe 2 placed on it, thereby transferring the steel pipe 2 from the extrusion block 7, improving the convenience and transfer efficiency of the steel pipe 2 transfer and enhancing the processing efficiency.

[0027] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

Claims

1. A stamping device for a steel pipe, characterized in that: It includes a mounting table, a lower mold is arranged on the mounting table, an arc groove is arranged on the upper surface of the lower mold, a support frame is arranged on one side of the mounting table, a hydraulic device is arranged on the upper end of the support frame, a fixed plate is arranged on the output end of the hydraulic device, an extrusion block is arranged on the lower end of the fixed plate, the lower surface of the extrusion block is arranged in an arc shape, the hydraulic device is slidably connected to the support frame, a plurality of fixed cavities are arranged at intervals on the support frame, a cylinder is arranged inside the fixed cavity, the output end of the cylinder is fixedly connected to the hydraulic device, a roller conveyor is arranged on the support frame, and when the steel plate used to make the steel pipe is placed on the roller conveyor, the lower surface of the steel plate is located above the upper surface in the lower mold.

2. The steel pipe stamping device according to claim 1, characterized in that: Arc-shaped protrusions are symmetrically arranged on both sides of the fixing plate.

3. The steel pipe stamping device according to claim 1, characterized in that: The roller conveyor is symmetrically provided with two limit grooves, the interiors of the two limit grooves are slidably connected with a bottom frame, one end of the bottom frame is provided with a mounting frame, the bottom of the mounting frame is symmetrically provided with rollers, and the upper end of the mounting frame is provided with a support cylinder.

4. The steel pipe press forming device according to claim 1, characterized in that: The remaining surface of the lower mold is provided with forming grooves.

5. The steel pipe press forming device according to claim 4, characterized in that: The center positions of the two ends of the lower die are respectively provided with hanging rings, and the hanging rings are rotatably connected with the lower die.

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